Hrmm when I'm ready to fight the goblin king, I buy my cheapo buffs, make sure I have the right outfit on, heal up, use the perfume, fight the king. I've never run the risk of using the perfume buffed turn elsewhere. Granted mistakes happen, but this seems like a corner case to me in comparison to semi rares and clovers being burned erroneously. That's just my two cents though and that doesn't really count for much
Edit: It's not likely that the hookah would provide this particular buff, but perhaps it's possible if one used the hookah prior to killing the goblin king. It certainly never showed up as a buff for me as yet, in aftercore, and been adventuring quite a bit with the hookah equipped.